TN4050HA-12GY-TR STMicroelectronics SCR (Other) In Stock
STMicroelectronics TN4050HA-12GY-TR is an automotive-grade SCR thyristor rated at 1200 V and 40 A in a surface mount D2PAK package. Designed for controlled rectification and AC power switching in harsh automotive and industrial environments. Available from authorized distributors with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TN4050HA-12GY-TR Datasheet PDF
- Category
- SCR
- Price
- From $1.1982(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TN4050HA-12GY-TR?
- 1200 V blocking voltage and 40 A on-state current handle high-power AC switching and motor soft-start loads
- Automotive-grade qualification ensures reliable operation across -40°C to 125°C junction temperature range in vehicle systems
- D2PAK surface mount package provides excellent thermal dissipation with exposed drain pad directly soldered to PCB copper
What is TN4050HA-12GY-TR used for?
The TN4050HA-12GY-TR is used in automotive battery management systems, alternator rectification stages, and electric vehicle on-board chargers where controlled AC-to-DC conversion at up to 1200 V and 40 A is required. Its automotive qualification makes it suitable for engine compartment power modules and 48 V mild-hybrid systems requiring SCR-based inrush current limiting and soft-start control. In industrial applications, it serves motor drives, welding power supplies, and soft-starter circuits where robust thyristor switching at high voltages is needed.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Where can I find the TN4050HA-12GY-TR datasheet?
TN4050HA-12GY-TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TN4050HA-12GY-TR?
Compatible alternatives and drop-in replacements for TN4050HA-12GY-TR:
Frequently Asked Questions
Which automotive power systems can the TN4050HA-12GY-TR switch at its 1200 V, 40 A ratings?
The TN4050HA-12GY-TR at 1200 V and 40 A is rated to control rectification in 48 V to 800 V automotive bus architectures, including high-voltage EV charging circuits and three-phase alternator rectifier bridges. A 40 A continuous on-state current supports power levels up to approximately 48 kW at 1200 V peak, covering most on-board charger and DC fast-charge switching stages in passenger electric vehicles.
How does the D2PAK package help manage thermal performance for a 40 A SCR in automotive environments?
The D2PAK package provides a large exposed copper slug on its underside that solders directly to a PCB copper pour or thermal via array, achieving a junction-to-board thermal resistance of approximately 2°C/W to 3°C/W. For the TN4050HA-12GY-TR dissipating roughly 40 W at full 40 A load, this thermal path limits junction temperature rise to around 80°C to 120°C above board temperature, keeping the device within its -40°C to 125°C automotive rated junction range with a properly designed heatsinking layer.
Is the TN4050HA-12GY-TR a direct replacement for the TN4050H-12GY in a 3-phase soft-starter design?
The TN4050HA-12GY-TR shares the same 1200 V, 40 A ratings and D2PAK package as the standard TN4050H-12GY, but the A suffix indicates automotive qualification to AEC-Q101 standards, which adds stricter screening for operating temperature and long-term reliability. In a 3-phase soft-starter operating from a 400 V line, either device can handle the 565 V peak per phase with 1200 V margin, making the TR variant a drop-in upgrade where the PCB footprint is unchanged and the automotive qualification improves reliability.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $2.7440 | $27.44 |
| 100+ | $1.9200 | $192.00 |
| 500+ | $1.6300 | $815.00 |
| 1000+ | $1.3400 | $1340.00 |
| 2000+ | $1.2100 | $2420.00 |
| 4000+ | $1.1982 | $4792.60 |
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